package chapter05.Example03;

public class Example03 {
    public static void main(String[] args) {
        String str="abcd";
        System.out.println("将字符串转换为字符数组后的结果:");
        char[] charArray=str.toCharArray();
        for (int i=0;i<charArray.length;i++){
            if (i !=charArray.length-1){
                System.out.println(charArray[i]+",");
            }else{
                System.out.println(charArray[i]);
            }
        }
        System.out.println("将int值转化为String类型之后的结果:"+String.valueOf(12));
        System.out.println("将字符串转化为大写字母之后的结果:"+str.toUpperCase());
        System.out.println("将字符串转化为大写字母之后的结果:"+str.toLowerCase());
    }
}
